hexagon: export raw I/O routines for modules

stable inclusion
form stable-v5.10.82
commit 0854c9ff2151f9180cdf4d4576ff3eb9f343d263
bugzilla: 185877 https://gitee.com/openeuler/kernel/issues/I4QU6V

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=0854c9ff2151f9180cdf4d4576ff3eb9f343d263

--------------------------------

commit ffb92ce8 upstream.

Patch series "Fixes for ARCH=hexagon allmodconfig", v2.

This series fixes some issues noticed with ARCH=hexagon allmodconfig.

This patch (of 3):

When building ARCH=hexagon allmodconfig, the following errors occur:

  ERROR: modpost: "__raw_readsl" [drivers/i3c/master/svc-i3c-master.ko] undefined!
  ERROR: modpost: "__raw_writesl" [drivers/i3c/master/dw-i3c-master.ko] undefined!
  ERROR: modpost: "__raw_readsl" [drivers/i3c/master/dw-i3c-master.ko] undefined!
  ERROR: modpost: "__raw_writesl" [drivers/i3c/master/i3c-master-cdns.ko] undefined!
  ERROR: modpost: "__raw_readsl" [drivers/i3c/master/i3c-master-cdns.ko] undefined!

Export these symbols so that modules can use them without any errors.

Link: https://lkml.kernel.org/r/20211115174250.1994179-1-nathan@kernel.org
Link: https://lkml.kernel.org/r/20211115174250.1994179-2-nathan@kernel.org
Fixes: 013bf24c ("Hexagon: Provide basic implementation and/or stubs for I/O routines.")
Signed-off-by: NNathan Chancellor <nathan@kernel.org>
Acked-by: NBrian Cain <bcain@codeaurora.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

arch/hexagon/lib/io.c

@@ -27,6 +27,7 @@ void __raw_readsw(const void __iomem *addr, void *data, int len)
 		*dst++ = *src;
 
 }
+EXPORT_SYMBOL(__raw_readsw);
 
 /*
  * __raw_writesw - read words a short at a time
@@ -47,6 +48,7 @@ void __raw_writesw(void __iomem *addr, const void *data, int len)
 
 
 }
+EXPORT_SYMBOL(__raw_writesw);
 
 /*  Pretty sure len is pre-adjusted for the length of the access already */
 void __raw_readsl(const void __iomem *addr, void *data, int len)
@@ -62,6 +64,7 @@ void __raw_readsl(const void __iomem *addr, void *data, int len)
 
 
 }
+EXPORT_SYMBOL(__raw_readsl);
 
 void __raw_writesl(void __iomem *addr, const void *data, int len)
 {
@@ -76,3 +79,4 @@ void __raw_writesl(void __iomem *addr, const void *data, int len)
 
 
 }
+EXPORT_SYMBOL(__raw_writesl);